[Bug] Fix NG crash when ability is reactivated for a Pokemon off the field

src/data/arena-tag.ts

@@ -1433,7 +1433,7 @@ export class SuppressAbilitiesTag extends ArenaTag {
         }),
       );
 
-      for (const fieldPokemon of globalScene.getField()) {
+      for (const fieldPokemon of globalScene.getField(true)) {
         if (fieldPokemon && fieldPokemon.id !== pokemon.id) {
           [true, false].forEach(passive => applyOnLoseAbAttrs(fieldPokemon, passive));
         }
@@ -1466,7 +1466,7 @@ export class SuppressAbilitiesTag extends ArenaTag {
       globalScene.queueMessage(i18next.t("arenaTag:neutralizingGasOnRemove"));
     }
 
-    for (const pokemon of globalScene.getField()) {
+    for (const pokemon of globalScene.getField(true)) {
       // There is only one pokemon with this attr on the field on removal, so its abilities are already active
       if (pokemon && !pokemon.hasAbilityWithAttr(PreLeaveFieldRemoveSuppressAbilitiesSourceAbAttr, false)) {
         [true, false].forEach(passive => applyOnGainAbAttrs(pokemon, passive));

test/abilities/neutralizing_gas.test.ts

@@ -1,4 +1,5 @@
 import { BattlerIndex } from "#app/battle";
+import { PostSummonWeatherChangeAbAttr } from "#app/data/ability";
 import { Abilities } from "#enums/abilities";
 import { ArenaTagType } from "#enums/arena-tag-type";
 import { Moves } from "#enums/moves";
@@ -7,7 +8,7 @@ import { Species } from "#enums/species";
 import { Stat } from "#enums/stat";
 import GameManager from "#test/testUtils/gameManager";
 import Phaser from "phaser";
-import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 
 describe("Abilities - Neutralizing Gas", () => {
   let phaserGame: Phaser.Game;
@@ -155,4 +156,25 @@ describe("Abilities - Neutralizing Gas", () => {
 
     expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined();
   });
+
+  it("should not activate abilities of pokemon no longer on the field", async () => {
+    game.override
+      .battleType("single")
+      .ability(Abilities.NEUTRALIZING_GAS)
+      .enemyAbility(Abilities.DELTA_STREAM);
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+
+    const enemy = game.scene.getEnemyPokemon()!;
+    const weatherChangeAttr = enemy.getAbilityAttrs(PostSummonWeatherChangeAbAttr, false)[0];
+    vi.spyOn(weatherChangeAttr, "applyPostSummon");
+
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeDefined();
+
+    game.move.select(Moves.SPLASH);
+    await game.killPokemon(enemy);
+    await game.killPokemon(game.scene.getPlayerPokemon()!);
+
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined();
+    expect(weatherChangeAttr.applyPostSummon).not.toHaveBeenCalled();
+  });
 });